Playing the medical card did not work for inside-trader king pin, Raj Rajaratnam either.

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The reason of course cash is king is there is no fee to pay away to the credit card company, or the handling bank or the tax man.

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King says that most of his clients are retailers, which are compelled by credit card industry audits to protect the financial data that travel on their networks, but airports are high on his prospect list.

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